Soda stream, one of the hottest gifts this holiday season. The little machine that turns tap water into sparkling soda. Is it a healthy alternative? Dave zinczenko takes a look. Now you can fizz your favorite drinks at home. Reporter: The environmentally friendly machines turning your water into beverages. Dpl turn water into soda if a second. Reporter: It is a healthier option? Soda stream's regular cola syrup uses real sugar and sucralose instead of high-fructose corn syrup. You're drinking liquid sugar. Liquid calories are absorbed faster than food calories. That means the natural sugars are still rushing right to your waistline. Some with zero sugars like the diet pink grapefruit contain food dyes that have been linked to negative health issues, like hyperactivity. Soda stream has a line called my water that contains no chemicals or dyes. Some consumers have gone out of their way to avoid caramel coloring used to make regular sodas. Soda stream tell us abc news that all of its flavors exceed the food safety standards set forth by the fda. They encourage consumers to read the label and make informed choices. It would be great to switch if you're a soda-drinking house hold. But nothing is better than water. Reporter: But it can be a tool. Build your own dee ziner soda. Use your machine to build selzer and add in 100% pomegranate or kranberry juice. I don't want to use the word healthier. It's not as bad. There's a difference between less bad and healthy. This is fewer calories. It's still got sugar and artificial sweeteners in it. Try to get bejs that move you toward health benefits. Make some great once at home. We have recipes all over the website. This mock tail is my fresher than fresca. It's seltzer and grapefruit juice. Is there any difference between noncarbonated water and the seltzer? You save a lot of money because a canister is $15. You get 16 quarters. You can save $45 over the course of 60 drinks. Speaking of saving money, our money booth, the new series,

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